header{
    width: 100%;
    height: 1rem;
    background-color: skyblue;
    color: #fff;
    font-size: .45rem;
    text-align: center;
    line-height: 1rem;
}
.item{
    width: 100%;
    height: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: .3rem;
    input{
        width: 80%;
        height: .7rem;
        padding-left: .1rem;
        box-sizing: border-box;
    }
}
.btn{
    width:100%;
    height: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    button{
        width: 25%;
        height: .7rem;
        text-align: center;
        line-height: .5rem;
        background-color: red;
        color: #fff;
        border: 0;
        border-radius: .1rem;
    }
}

